Transcript for Bowe Bergdahl Back to 'Regular Duty,' Controversy Continues

this evening and to a developing headline involving that American sergeant rescued from the Taliban. Bowe bergdahl, it's been six weeks since his release, that dramatic handover caught on tape, one of his captors leading in, a member of the American team reporting him down. Tonight after 45 days of treatment we learn of a new post, the army putting him back on regular duty, and some or outraged. ABC's chief investigative correspondent Brian Ross tonight. Reporter: Today a new chapter for sergeant Bowe bergdahl -- just a little over six weeks now since the dramatic prisoner swap that led to his release after almost five years in the hands of the Taliban. This morning the army announced bergdahl has been returned to regular duty and given a desktop in fort Sam Houston in San Antonio after completing what military psychologists call his re-integration process. In captivity, fundamentally our decision to make any choice is taken away. So, we slowly increase their chances to make choices and have a sense of control. Reporter: During his long captivity, bergdahl's parents were tireless in their efforts to gain his freedom. I pray this video may be shown to our only son. Reporter: But army officials said today that bergdahl did not meet with his parents during the transition period. Bergdahl's return to regular duty also means that the army can begin the most sensitive part of its investigation, questioning him about how he became a Taliban prisoner in the first place. Since his release, the Taliban posted this propaganda photo online showing a smiling bergdahl with a Taliban leader who has since been killed. But the Taliban did not release any pictures of the metal cage in which bergdahl says he was held after trying to escape. The Pentagon said today it has concluded bergdahl did not engage in any criminal misconduct while a prisoner, but the investigation as to whether he did desert is post is due to be completed in a month. What more do we know about communication or lack thereof with his parents. After five years he did not ask to be put in contact with his parents. Brian, thank you. This evening, officials are studying a new tape from the

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